1: E-cinnamyltriphenylphosphonium chloride in tetrahydrofuran; hexane T=-78°C; 1 h; Inert atmosphere; 2: N-(2-Naphthylmethylene)methanesulphonamide in tetrahydrofuran; hexane T=-78 - 20°C; 12 h; Inert atmosphere; optical yield given as percent destereoselective reaction;

acetic anhydride; PbO

acetic anhydride; PbO